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(No Model.)

C. F. BRUSH. SPRING GUSHIONBD 0R SUSPENDED ARG LAMP.

110.461,420. Patented 0013.20, 1891.

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WITNESSES l C 7/Z` mvwro .f W

y@ 6? WT f UNITED STATES I*PATENT OFFICE.

CHARLES F. BRUSH, OF CLEVELAND, OHIO, ASSIGNOR TO THE BRUSH ELECTRIC COMPANY, OF SAME PLACE.

SPRING CUSHIONED OR SUSPENDED ARC LAMP.

SPECIFICATION forming part of Letters Irlatent N o. 461,420, dated October 20, 1891. Application filed May 26, 1880. Serial No. 10,651. (No model.)

To all whom it may concern:

connected with the terminals of the lamp.

Be it known that I, CHARLES F. BRUSH, of The springs serve the double function of con- Cleveland, in the county of Cuyahoga and State of Ohio, have invented certain new and useful Improvements in Spring Cushioned or Suspended Electric Lamps; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it pertains to make and use it, reference being had to the accompanying drawings, which form part of this specification.

My invention relates to electric lamps, the object being to provide means for preventing the injurious effect to the operation of one or more lamps that are operating in series by reason of jarring or jolting of the lamps support; and with this end in View my invention consists in the combination, with an electric lamp, of a spring or yielding cushion for supporting or suspending the lamp, and thereby preventing the lamp from being disturbed or deranged by the jolting or jarring of its support.

My invention further consists in the combination, with an electric lamp, of suspending or supporting springs formed of electric conducting material and adapted to convey the current to and from the lamp. y

In the drawings, Figure l is a view in side elevation of an electric lamp suspended from a ceiling' or upper support by means of metallic springs electrically connected at one end to the main conductor and at their opposite ends to the terminals of the lamp. Fig. 2 shows spiral springs employed in lieu of the iiat springs of Fig. l. Fig. 3 shows spiral springs inserted beneath the base of the lamp. Fig. 4 represents thelamp suspended from the bracket by means of a spiral spring. Figf shows a lamp supported upon a tableY by means of interposed spiral springs which serve as a yielding cushion for the lamp. Fig. 6 illustrates in diagram a series of arc lamps suspended by springs electrically connecting the lamps with the main circuit.

In Fig. l, A represents an electric-arc lamp of any preferred type of construction, and B B are metallic springs electrically connected at their upper ends with the main conductor, While their lower or free ends are electrically veying the current to and from the lamp and also supporting it in a yielding manner, so that any jolting to which its support is subjected will be taken up by the springs and thereby prevent any derangement of the feeding or regulating mechanism of the lamp, and thus avoid any such action of the lamp as would otherwise tend to disturb the regularity of the current in the main or general circuit which would manifestly disturb the operation of the remaining lamps on the circuit.

In the remaining figures of drawings I have represented spiral springs as the supports. In Figs. 2, 4, and 6 the springs are employed to suspend the lamp, while in Figs. 3 and. 5

they are arranged beneath the lamp to support it in a yielding manner and do not necessarily serve as electric conductors for conveying the current to and from the lamp.

Where springs or cushions are employed only to support the lamp in a yielding manner the springs or cushions may be constructed from 'metal, rubber, or any suitable material, or an air-cushion, if found preferable, may be employed.

In practice I have found the employment of a spring or cushion with an arc electric lamp useful in such places as shops, wherein the floor is subject to the jar of heavy machinery, inasmuch as this jar occasionally becomes an element of disturbance to prevent a uniform and steady light.

vention is evident when its introduction into a system of two or more arc lamps upon a single circuit is considered. In such a system, with certain types of electric lamps, any derangement of the action of any 'one lamp will simultaneously derange every other lamp on the circuit. The employment, therefore,

of the spring or cushion B, as herein speciv fied, constitutes an operative element of an arc electric-lighting system instead of a mere adjunct to any individual lamp. In a system such as referred to it may' not always be nee essary to apply the supporting spring or cushion to every lamp, and my invention therefore comprehends a system wherein one or more or all of the lamps are thus equipped. Only such lamps as are subjected to jolting (be it one or more) require a spring or cush' ion support.

Having fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-A l. The combination, with an electric circuit and a series 0f arc lamps included therein, of springs or cushions for supporting one or more of said lamps, substantially as set forth.

2. The combination, with an electric circuit and an electric lamp, of spring-yielding electric conductors connected at one end to the circuit and at their opposite ends with the terminals of said lamp, and serving to suspend the lamp in a spring-yielding manner and also to convey the electric current to and from the lamp, Vsubstantially as set forth.

3. The combination, with an electric circuit havin-g two or more translating devices included therein in series, of yan electric arc lamp included in said circuit and provided with one or more supporting springs or cushions, substantially as set forth.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

cHARLEs F. BRUSH.

Witnesses:

. LEVERETT L. LEGGETT,

WILLARD FRACKER. 

